So I got my recently acquired 91 rt tt running pretty good by having the ecu refurbished. I have only driven it a few miles since but I am really starting to want to keep it. The car has 150,000 miles but is very clean and seems like it has been looked after. The engine is original and the heads have never been off. Am I getting myself into a nightmare by keeping one around with mileage like this? Is it common for these cars to blow engines, headgaskets, turbos etc? It Seems to have good oil pressure, doesn’t overheat. Anything else major I should look for? Check engine light is on so I will look into that. Thanks!